Wolfram Alpha - Computational Search Engine

I've just been playing with the following site

www.wolframalpha.com/

Which i think came on-line today (or yesterday).

I typed in
surface brightness M81

Output: 13.0

I typed in
magnitude star vega and capella

Output:
Vega: +0.03
Capella: +0.08

I couldn't get it to compute a combined magnitude.
I could get a star chart and an enquiry into the temperature of star Vega presented a couple of nice black-body curves.

I entered a search comprising words saturn alt and azimuth and it reported current location from Dublin.

I typed ISS and it presented a map of where it is and when it rises and sets from Dublin.

Then it said it was overloaded and pretended to be HAL from 2001 (seriosly - "Dave, I'm afraid I can not do that").

Could be usefull.

Mark

Thants impressive;

I put in 'planck constant' and got back

Input interpretation:
h (Planck constant)
Value:
6.626069x10^-34 J s (joule seconds)

Ah yes, I tried to have a go at this a few days ago but wasn't launched then.
A handy little device.
For the fun of it I put in "warp speed" but all I got back was:

Wolfram|Alpha isn't sure what to do with your input.

I'm not sure what to do with it either to be honest!

Seriously though, it is sensitive to how you type something.
I typed in "light speed" but it came back with the same error message as above.
However, whan I put in "speed of light" it came back with the correct details:

Input interpretation:
c (speed of light)
Value:Show exact value
299 792 km/s (kilometers per second)
2.998x10^8 m/s (meters per second)
1 Planck speed
Comparison:
~~ 2.4 x speed of light in diamond (~~ 1.24x10^8 m/s )
Interpretation:
speed
Basic unit dimensions:
[length] [time]^(-1)
Corresponding quantity:
Slowness from S=1/v:\n | 3.336x10^-9 s/m (seconds per meter)

Michael.